Iim not sure where you are from but you can book a really great rate for all inclusive hotel only through
Sunwing.ca - Discount Travel, Vacation Packages, Last Minute Travel Deals, All Inclusive Vacations, Fly Cheap, Hotels, Resorts, Car Rentals
If you are in the US and need flight too you can try vacation express. i have used them a couple times in the last few years & they do offer 3-4 day packages to punta cana....depending on the time of year they are connecting flights through orlando or atlanta (i think atlanta through the summer).